Hydrochloric Acid → HCID 67008821, compound

HRID 2048622Notes

Reaction equation

[OH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13](=[O:14])[C:12]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([C:22]4[C:23]([C:28]#[N:29])=[CH:24][CH:25]=[CH:26][CH:27]=4)=[CH:18][CH:17]=3)=[C:11]([CH2:30][CH2:31][CH3:32])[N:10]3[N:33]=[CH:34][N:35]=[C:9]23)=[CH:4][CH:3]=1.Br[C:37]([CH3:43])([CH3:42])[C:38]([O:40][CH3:41])=[O:39].C(=O)([O-])[O-].[Cs+].[Cs+].Cl>CN(C)C=O>[C:28]([C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=1[C:19]1[CH:20]=[CH:21][C:16]([CH2:15][C:12]2[C:13](=[O:14])[N:8]([C:5]3[CH:6]=[CH:7][C:2]([O:1][C:37]([CH3:43])([CH3:42])[C:38]([O:40][CH3:41])=[O:39])=[CH:3][CH:4]=3)[C:9]3[N:10]([N:33]=[CH:34][N:35]=3)[C:11]=2[CH2:30][CH2:31][CH3:32])=[CH:17][CH:18]=1)#[N:29]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 4′-{[4-(4-hydroxyphenyl)-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (3.70 g), methyl 2-bromo-2-methylpropanoate (7.30 g), cesium carbonate (13.07 g) and N,N-dimethylformamide (20 mL) was stirred at 80° C. overnight. The reaction mixture was poured into 1 M hydrochloric acid (40 mL), and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a colorless oil (4.50 g, quantitative).

Workup

extractionthe mixture was extracted with ethyl acetate
washThe ethyl acetate layer was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-9cfbc251bc194188a236efa470a1e2dc
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08592431B2

Reaction notes

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